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Finding the Fourth Proportional to 13,573.68, 18,732.82 and 7,605.90

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Solution

The fourth proportional to 13,573.68, 18,732.82 and 7,605.90 is: 10,496.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,573.68 : 18,732.82 = 7,605.90 : x
  2. Step 2: Convert to fraction form
    13,573.68/18,732.82 = 7,605.90/x
  3. Step 3: Cross multiply
    13,573.68x = 18,732.82 × 7,605.90
  4. Step 4: Simplify right side
    13,573.68x = 142,479,950.88
  5. Step 5: Solve for x
    x = 142,479,950.88/13,573.68
  6. Step 6: Final answer
    x = 10,496.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.